Add `--help` CLI argument

[sohang3112]

Add command line help by identifying flags --help or -h. All CLI tools have these arguments, so it's a bit strange that 2048 doesn't.

[mevdschee]

True and some have -v or --version too :-)

[Rudxain]

All CLI tools have these arguments, so it's a bit strange that 2048 doesn't.

I'm unsure if that's necessary here, as the README is helpful, and the game is simple and intuitive. But it's still "good practice" in terms of design.

pedantic correction (nit-pick): It should be "parameters" rather than "arguments", in this case. Params are named arg values. But since help doesn't "store" any args, it should be referred-to as a "flag" or "switch"

[sohang3112]

@mevdschee Should I raise a PR to add --help and --version flags?

[sohang3112]

@mevdschee Please respond, should I raise a PR for this if you're ok with this change?

[mevdschee]

I'm not sure what exactly it is you propose, but if you want/like to make a PR, you may. I like any contributions to be as small as possible, so the smaller your PR is, the more likely I'll merge it.

[sohang3112]

Ok great, I'll raise a PR in a while. Not proposing any radical change, just adding --help to show existing options (and --version).

[sohang3112]

@mevdschee Raised PR to add --help, --version options. See pull request #64 for the implementation. Please review it.

[mevdschee]

Thank you for your effort. I see the code defaults to color scheme than it used to. The version is not correct. Also the readme change is not correct nor is the Spanish version updated. It also seemed like you didn't use a formatter. I'll see what I can make of it.

NB: I released your code as part of version v1.0.2

[sohang3112]

I see the code defaults to color scheme than it used to. The version is not correct. Also the readme change is not correct nor is the Spanish version updated. It also seemed like you didn't use a formatter.

Sorry for the mistakes, will keep in mind for future. You may want to consider making a CONTRIBUTING.md that's helpful for new contributors.

[mevdschee]

Sorry for the mistakes, will keep in mind for future.

Don't worry about it, these were all minor. Thank you for your contribution.